You are already getting responses on DL from your duplicate post to misc@.

Recommendatiion. If you post to misc@, don't bother posting here. This is a much smaller audience.

It looks, from the responses so far, that you have poor media or a poor fit with your media and drive.

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I have issues with your growisofs command. Whether your choices have anything to do with your problem is not known, but it is possible.

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First, note this paragraph in the growisofs(1m) man page. The highlight in red is mine:

Quote:

There are several undocumented options commonly denoted
with -use-the-force-luke prefix. Some of them serve debug-
ging purposes. Some require certain knowledge about
recording process or even OS kernel internals and as being
such can induce confusing behaviour. Some are to be used
in very specific situations better recognized by front-
ends or automated scripts. Rationale behind leaving these
options undocumented is that those few users who would
actually need to use them directly can as well consult the
source code or obtain specific instructions elsewhere.

Second, the same man page describes how to burn DVDs with pre-mastered images, or images in formats other than CD9660 or CD9660/UDF. Note the use of -dvd-compat to force a single, closed session:

Quote:

To use growisofs to write a pre-mastered ISO-image to a
DVD:

growisofs -dvd-compat -Z /dev/dvd=image.iso

where image.iso represents an arbitrary object in the
filesystem, such as file, named pipe or device entry.
Nothing is growing here and command name is not intuitive
in this context.

In general, it is best -not- to try command strings you find on the Internet at random. They are likely to cause more harm than good.